EP0534654A3 - Rf water level measurement - Google Patents
Rf water level measurement Download PDFInfo
- Publication number
- EP0534654A3 EP0534654A3 EP19920308330 EP92308330A EP0534654A3 EP 0534654 A3 EP0534654 A3 EP 0534654A3 EP 19920308330 EP19920308330 EP 19920308330 EP 92308330 A EP92308330 A EP 92308330A EP 0534654 A3 EP0534654 A3 EP 0534654A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- water level
- level measurement
- measurement
- water
- level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9120511A GB2260235B (en) | 1991-09-26 | 1991-09-26 | Measurement of liquid level |
GB9120511 | 1991-09-26 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0534654A2 EP0534654A2 (en) | 1993-03-31 |
EP0534654A3 true EP0534654A3 (en) | 1993-12-15 |
EP0534654B1 EP0534654B1 (en) | 1996-06-05 |
Family
ID=10702025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92308330A Expired - Lifetime EP0534654B1 (en) | 1991-09-26 | 1992-09-14 | RF water level measurement |
Country Status (7)
Country | Link |
---|---|
US (1) | US5249463A (en) |
EP (1) | EP0534654B1 (en) |
JP (1) | JPH05223625A (en) |
CA (1) | CA2078488A1 (en) |
DE (1) | DE69211271T2 (en) |
ES (1) | ES2089413T3 (en) |
GB (1) | GB2260235B (en) |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5376888A (en) * | 1993-06-09 | 1994-12-27 | Hook; William R. | Timing markers in time domain reflectometry systems |
US5609059A (en) * | 1994-12-19 | 1997-03-11 | The Regents Of The University Of California | Electronic multi-purpose material level sensor |
US5610611A (en) * | 1994-12-19 | 1997-03-11 | The Regents Of The University Of California | High accuracy electronic material level sensor |
DE19510484C2 (en) * | 1995-03-27 | 1998-04-09 | Krohne Messtechnik Kg | Level meter |
RU2124702C1 (en) * | 1995-07-10 | 1999-01-10 | Чангмин Ко., Лтд. | Process measuring level of water or liquid ( versions ) and bubbling level indicator |
DE19541669C2 (en) * | 1995-11-09 | 2001-01-25 | Krohne Ag | Implementation for an electrical high-frequency measurement signal |
US6118282A (en) * | 1995-12-19 | 2000-09-12 | Endress & Hauser Gmbh & Co. | Sensor apparatus |
US5827985A (en) * | 1995-12-19 | 1998-10-27 | Endress + Hauser Gmbh + Co. | Sensor apparatus for process measurement |
US5729787A (en) * | 1996-07-23 | 1998-03-17 | Eastman Kodak Company | Toner concentration monitor and method |
CA2182836C (en) * | 1996-08-07 | 2000-07-25 | Milltronics Ltd. | Probe for use in time domain reflectometry |
US6121780A (en) * | 1996-10-07 | 2000-09-19 | Cruickshank; William T. | Material interface level sensing |
US6178817B1 (en) * | 1996-11-22 | 2001-01-30 | Venture Measurement Company Llc | Material level sensing |
US5819582A (en) * | 1997-03-31 | 1998-10-13 | Kelly; John M. | Slow wave time-domain reflectometer point level sensor |
AU8404398A (en) | 1997-07-18 | 1999-02-10 | Kohler Company | Advanced touchless plumbing systems |
US6386055B1 (en) | 1998-01-06 | 2002-05-14 | Endress +Hauser Gmbh +Co. | Sensor apparatus for transmitting electrical pulses from a signal line into and out of a vessel to measure a process variable—in order to be more informative |
US5973637A (en) * | 1998-01-09 | 1999-10-26 | Endress + Hauser Gmbh + Co. | Partial probe mapping |
US6078280A (en) * | 1998-01-09 | 2000-06-20 | Endress + Hauser Gmbh + Co. | Periodic probe mapping |
US6559657B1 (en) | 1999-01-13 | 2003-05-06 | Endress+Hauser Gmbh+Co. | Probe mapping diagnostic methods |
EP1126251A3 (en) * | 2000-02-17 | 2002-05-29 | Endress + Hauser GmbH + Co. KG | Device for level measurement |
KR20040004760A (en) * | 2000-03-07 | 2004-01-14 | 허니웰 인터내셔날 인코포레이티드 | Apparatus and method for measuring the level of a fluid |
DE10028864A1 (en) * | 2000-06-10 | 2001-12-20 | Daimler Chrysler Ag | Temperature and aging stability enhancement method for radar fill level meter, involves determining distance of radar system to dielectric reference disk |
DE10037715A1 (en) * | 2000-08-02 | 2002-02-14 | Endress Hauser Gmbh Co | Device for measuring the level of a product in a container |
US6750657B2 (en) | 2000-11-23 | 2004-06-15 | Vega Grieshaber Kg | Combination of a feedthrough element for an electric high-frequency signal and a probe, and a level meter metering device including a combination of this type |
DE10109453A1 (en) * | 2001-02-27 | 2002-09-26 | Endress & Hauser Gmbh & Co Kg | Device for determining and / or monitoring the level of a product in a container |
DE10136754A1 (en) * | 2001-07-27 | 2003-02-13 | Siemens Ag | Density measurement for medium in container, comprises feeding questioning signal into probe and then detecting response signal |
US7592946B2 (en) * | 2005-02-14 | 2009-09-22 | Endress + Hauser Gmbh + Co. Kg | Level measurement arrangement |
KR100599058B1 (en) * | 2005-03-15 | 2006-07-12 | 삼성전자주식회사 | Method and apparatus for measuring level of liquid, and apparatus for manufacturing a semiconductor device having the same |
US7255002B2 (en) * | 2005-04-07 | 2007-08-14 | Rosemount, Inc. | Tank seal for guided wave radar level measurement |
DE102006019191A1 (en) * | 2006-04-21 | 2007-10-25 | Endress + Hauser Gmbh + Co. Kg | Method for detecting and monitoring the level of a medium in a container |
US7525476B1 (en) | 2007-11-13 | 2009-04-28 | Rosemount Tank Radar Ab | System and method for filling level determination |
US7586435B1 (en) | 2008-05-16 | 2009-09-08 | Rosemount Tank Radar Ab | Radar level gauge system using a waveguiding structure with periodically arranged reference impedance transitions |
US8044838B1 (en) * | 2008-08-13 | 2011-10-25 | The Boeing Company | Methods and systems for determining the phase constant for a dielectric medium |
US8018373B2 (en) * | 2008-12-19 | 2011-09-13 | Rosemount Tank Radar Ab | System and method for filling level determination |
US9032565B2 (en) | 2009-12-16 | 2015-05-19 | Kohler Co. | Touchless faucet assembly and method of operation |
BR112013014987A2 (en) * | 2010-12-16 | 2016-09-13 | Grieshaber Vega Kg | device for measuring emulsions with a standpipe |
US8701483B2 (en) * | 2010-12-16 | 2014-04-22 | Vega Grieshaber Kg | Device for emulsion measuring by means of a standpipe |
US9907908B2 (en) | 2011-03-08 | 2018-03-06 | Baxter International Inc. | Non-invasive radio frequency medical fluid level and volume detection system and method |
EP3376171B1 (en) | 2012-08-14 | 2020-03-11 | Hamlin Electronics Europe Ltd. | Extended stroke position sensor |
US9551601B2 (en) * | 2014-12-30 | 2017-01-24 | Dieterich Standard, Inc. | Variable line size averaging pitot tube |
DE102017119502A1 (en) | 2017-08-25 | 2019-02-28 | Krohne S. A. S. | TDR level gauge and method of operating a TDR level gauge |
RU2768556C1 (en) * | 2021-03-15 | 2022-03-24 | Федеральное государственное бюджетное учреждение науки Институт проблем управления им. В.А. Трапезникова Российской академии наук | Apparatus for measuring the level of liquid in a tank |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3703829A (en) * | 1971-04-19 | 1972-11-28 | Honeywell Inc | Liquid quantity gaging system |
DE2440402A1 (en) * | 1973-08-29 | 1975-03-06 | Measurand Systems | DEVICE FOR MEASURING AN INTERMEDIATE LIQUID AREA |
DE3822138A1 (en) * | 1987-07-06 | 1989-01-19 | Atomic Energy Authority Uk | Liquid-level monitoring |
DE3938409A1 (en) * | 1988-12-28 | 1990-07-05 | Nagema Veb K | Universal sensor operating circuit - has generator, waveguide, output-coupling and antenna |
EP0435488A1 (en) * | 1989-12-20 | 1991-07-03 | Westinghouse Electric Corporation | Apparatus and method for providing a temperature compensated liquid level measurement |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3358510A (en) * | 1964-11-18 | 1967-12-19 | Oil Rite Corp | Liquid level gauge and method of making a gauge enclosure |
GB1144345A (en) * | 1965-05-28 | 1969-03-05 | Atomic Energy Authority Uk | Improvements in or relating to methods and apparatus for detecting a fluid interface |
US3424002A (en) * | 1965-06-01 | 1969-01-28 | Marathon Oil Co | Apparatus for the determination of location of interfaces between different materials |
US3474337A (en) * | 1966-12-27 | 1969-10-21 | Jackson & Church Electronics C | System for sensing levels and electrical characteristics of fluent materials |
US3832900A (en) * | 1971-06-28 | 1974-09-03 | Sperry Rand Corp | Apparatus and method for measuring the level of a contained liquid |
GB1448282A (en) * | 1973-01-30 | 1976-09-02 | Whessoe Ltd | Liquid level gauge |
US3874237A (en) * | 1973-02-15 | 1975-04-01 | Canadian Patents Dev | Liquid level height measuring apparatus |
US4566321A (en) * | 1985-01-18 | 1986-01-28 | Transamerica Delaval Inc. | Microwave tank-contents level measuring assembly with lens-obturated wall-opening |
US4786857A (en) * | 1986-04-24 | 1988-11-22 | Charles L. Mohr | Methods and apparatus for time domain reflectometry determination of relative proportion, fluid inventory and turbulence |
US4934186A (en) * | 1987-09-29 | 1990-06-19 | Mccoy James N | Automatic echo meter |
-
1991
- 1991-09-26 GB GB9120511A patent/GB2260235B/en not_active Expired - Fee Related
-
1992
- 1992-09-14 EP EP92308330A patent/EP0534654B1/en not_active Expired - Lifetime
- 1992-09-14 ES ES92308330T patent/ES2089413T3/en not_active Expired - Lifetime
- 1992-09-14 DE DE69211271T patent/DE69211271T2/en not_active Expired - Fee Related
- 1992-09-17 CA CA002078488A patent/CA2078488A1/en not_active Abandoned
- 1992-09-21 US US07/947,846 patent/US5249463A/en not_active Expired - Lifetime
- 1992-09-24 JP JP4253333A patent/JPH05223625A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3703829A (en) * | 1971-04-19 | 1972-11-28 | Honeywell Inc | Liquid quantity gaging system |
DE2440402A1 (en) * | 1973-08-29 | 1975-03-06 | Measurand Systems | DEVICE FOR MEASURING AN INTERMEDIATE LIQUID AREA |
DE3822138A1 (en) * | 1987-07-06 | 1989-01-19 | Atomic Energy Authority Uk | Liquid-level monitoring |
DE3938409A1 (en) * | 1988-12-28 | 1990-07-05 | Nagema Veb K | Universal sensor operating circuit - has generator, waveguide, output-coupling and antenna |
EP0435488A1 (en) * | 1989-12-20 | 1991-07-03 | Westinghouse Electric Corporation | Apparatus and method for providing a temperature compensated liquid level measurement |
Also Published As
Publication number | Publication date |
---|---|
GB2260235A (en) | 1993-04-07 |
JPH05223625A (en) | 1993-08-31 |
GB2260235B (en) | 1995-07-12 |
EP0534654A2 (en) | 1993-03-31 |
GB9120511D0 (en) | 1991-11-06 |
DE69211271T2 (en) | 1997-01-23 |
DE69211271D1 (en) | 1996-07-11 |
EP0534654B1 (en) | 1996-06-05 |
US5249463A (en) | 1993-10-05 |
CA2078488A1 (en) | 1993-03-27 |
ES2089413T3 (en) | 1996-10-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0534654A3 (en) | Rf water level measurement | |
EP0496984A3 (en) | Measurement probe | |
GB9116044D0 (en) | Probes | |
EP0518635A3 (en) | Probe | |
GB2238390B (en) | Water level probe | |
GB8904707D0 (en) | Water vaporisor | |
GB8906544D0 (en) | Water level alarm | |
GB9324157D0 (en) | Water level measurement | |
IL103158A0 (en) | Measuring tank | |
GB9122526D0 (en) | Liquid level indicator | |
GB9118715D0 (en) | Probe | |
EP0514590A3 (en) | Level measuring method | |
PL299229A1 (en) | Water meter | |
GB2262607B (en) | Probe | |
GB8828042D0 (en) | Water meter | |
GB9218221D0 (en) | Water-finding probe | |
GB9116146D0 (en) | Water level gauge | |
GB9110915D0 (en) | Fluid level measurement | |
GB9404610D0 (en) | Water level measurement | |
GB9103718D0 (en) | Level meters | |
GB9112763D0 (en) | Level meters | |
GB9125130D0 (en) | Water level sensor | |
GB9001317D0 (en) | Liquid level measurement | |
GB9005211D0 (en) | Water level detector | |
GB9101114D0 (en) | Liquid level indicator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): BE DE ES FR IT NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): BE DE ES FR IT NL SE |
|
17P | Request for examination filed |
Effective date: 19940505 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SOLARTRON TRANSDUCERS LIMITED |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SOLARTRON GROUP LIMITED |
|
17Q | First examination report despatched |
Effective date: 19950310 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE DE ES FR IT NL SE |
|
ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO MILANO S.P.A. |
|
REF | Corresponds to: |
Ref document number: 69211271 Country of ref document: DE Date of ref document: 19960711 |
|
RAP4 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: SOLARTRON GROUP LIMITED |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19960905 |
|
ET | Fr: translation filed | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2089413 Country of ref document: ES Kind code of ref document: T3 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2089413 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20000904 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20000912 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20000925 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20000928 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20001117 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010915 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010930 |
|
BERE | Be: lapsed |
Owner name: SOLARTRON GROUP LTD Effective date: 20010930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020401 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020501 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020531 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20020401 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20020401 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20021011 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050914 |